JSON Formatter
Format and validate JSON instantly.
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Indent
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Result
Valid JSON
{
"hello": "world",
"count": 2
}Actions
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What is this tool?
A JSON Formatter helps you quickly validate and pretty‑print JSON so it’s easy to read, debug, and share.
How to use
- Paste your JSON into the input box.
- Choose indentation (2 or 4 spaces).
- Review the formatted output (or fix the error message if invalid).
- Copy or download the formatted JSON.
Example input/output
Example input
{"name":"Ava","active":true,"roles":["admin","editor"],"count":2}Example output
{
"name": "Ava",
"active": true,
"roles": [
"admin",
"editor"
],
"count": 2
}Benefits
- Catch invalid JSON instantly.
- Readable formatting for debugging and reviews.
- Copy/download results in one click.
- Runs in-browser for fast feedback.
FAQ
Does this tool validate JSON?
Yes. If your JSON is invalid, you’ll see an error instead of formatted output.
Will it change my data?
Formatting only changes whitespace (indentation/newlines), not the underlying values.
Is my JSON uploaded anywhere?
No—formatting happens in your browser.
Why do I see an error even though it looks valid?
Common causes include trailing commas, unquoted keys, or using single quotes.
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